Which object has the least amount of kinetic energy? a car driving down a road a soccer ball rolling down a hill a bicycle locke
2 answers:
Answer:
A bicycle locked to a bike
Explanation:
The kinetic energy of an object when an object is moving. The mathematical expression for the kinetic energy of an object is given by :
Where
m is the mass of an object
v is the velocity of an object
First option : A car driving down a road, the car is moving i.e. it will possess kinetic energy.
Second option : A soccer ball rolling down a hill, the ball is moving i.e. it will possess kinetic energy
Third option : A bicycle locked to a bike, neither bicycle nor bike is moving i.e. it will not possess kinetic energy.
Fourth option : A satellite orbiting Earth, the satellite is moving i.e. it will possess kinetic energy.
Hence, "a bicycle locked to a bike " has least amount of kinetic energy.
You might be interested in
Period = 6 seconds and .
<u>Explanation:</u>
We have , the motion of a swing that requires 6 seconds to complete one cycle. Period is the amount of time needed to complete one oscillation . And in question it's given that 6 seconds is needed to complete one cycle. Hence ,Period of the motion of a swing is 6 seconds . Frequency is the number of vibrations produced per second and is calculated with the formula of . SI unit of frequency is Hertz or Hz. We know that time period is 6 seconds so frequency =
⇒
⇒
⇒
Therefore , Period = 6 seconds and .
Answer:
37.34372 kg
Explanation:
m = Mass
= Change in temperature
1 denotes water
2 denotes copper
c = Heat capacity
Heat is given by
In this case the heat transfer will be equal
Mass of copper block is 37.34372 kg